20839688

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4943}}^1$

素因数の和:4997

約数の個数: 32

約数和(自身を含む): 42716160

約数和(自身を除く): 21876472

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 4943, 9886, 19772, 39544, 84031, 153233, 168062, 306466, 336124, 612932, 672248, 1225864, 2604961, 5209922, 10419844, 20839688]

約数ペア:

[(1, 20839688), (2, 10419844), (4, 5209922), (8, 2604961), (17, 1225864), (31, 672248), (34, 612932), (62, 336124), (68, 306466), (124, 168062), (136, 153233), (248, 84031), (527, 39544), (1054, 19772), (2108, 9886), (4216, 4943)]